No. Vivo Y83 does not have the NFC support.
There is no official announcement from the company if Vivo Y83 will support 5G network in future or not. But looking at the technical side of the phone specifications, we think that Vivo Y83 will support 5G network in future.
Yes, Vivo Y83 does have the fingerprint scanner.
Yes, Vivo Y83 is a true 4G VoLTE phone.